Improvements to Safe Haskell userguide.
Improvements to Safe Haskell userguide.

bitemyapp/ghc,nushio3/ghc,lukexi/ghc-7.8-arm64,TomMD/ghc,spacekitteh/smcghc,TomMD/ghc,snoyberg/ghc,mcmaniac/ghc,lukexi/ghc-7.8-arm64,jstolarek/ghc,olsner/ghc,oldmanmike/ghc,vTurbine/ghc,siddhanathan/ghc,mettekou/ghc,ml9951/ghc,hferreiro/replay,jstolarek/ghc,shlevy/ghc,elieux/ghc,bitemyapp/ghc,da-x/ghc,AlexanderPankiv/ghc,holzensp/ghc,ryantm/ghc,vTurbine/ghc,sgillespie/ghc,ezyang/ghc,anton-dessiatov/ghc,hferreiro/replay,anton-dessiatov/ghc,vTurbine/ghc,fmthoma/ghc,gcampax/ghc,forked-upstream-packages-for-ghcjs/ghc,nkaretnikov/ghc,fmthoma/ghc,oldmanmike/ghc,gcampax/ghc,spacekitteh/smcghc,ghc-android/ghc,forked-upstream-packages-for-ghcjs/ghc,siddhanathan/ghc,jstolarek/ghc,vikraman/ghc,AlexanderPankiv/ghc,ryantm/ghc,GaloisInc/halvm-ghc,sgillespie/ghc,tjakway/ghcjvm,ekmett/ghc,snoyberg/ghc,da-x/ghc,acowley/ghc,mcmaniac/ghc,christiaanb/ghc,ilyasergey/GHC-XAppFix,wxwxwwxxx/ghc,mettekou/ghc,christiaanb/ghc,mfine/ghc,GaloisInc/halvm-ghc,vTurbine/ghc,anton-dessiatov/ghc,nkaretnikov/ghc,urbanslug/ghc,sdiehl/ghc,lukexi/ghc,vTurbine/ghc,ghc-android/ghc,frantisekfarka/ghc-dsi,gridaphobe/ghc,frantisekfarka/ghc-dsi,wxwxwwxxx/ghc,vikraman/ghc,frantisekfarka/ghc-dsi,shlevy/ghc,mettekou/ghc,forked-upstream-packages-for-ghcjs/ghc,vikraman/ghc,siddhanathan/ghc,tjakway/ghcjvm,fmthoma/ghc,shlevy/ghc,green-haskell/ghc,snoyberg/ghc,bitemyapp/ghc,elieux/ghc,oldmanmike/ghc,gridaphobe/ghc,AlexanderPankiv/ghc,gcampax/ghc,oldmanmike/ghc,ilyasergey/GHC-XAppFix,hferreiro/replay,lukexi/ghc,mcschroeder/ghc,sgillespie/ghc,TomMD/ghc,ml9951/ghc,vTurbine/ghc,mfine/ghc,ml9951/ghc,wxwxwwxxx/ghc,GaloisInc/halvm-ghc,TomMD/ghc,GaloisInc/halvm-ghc,acowley/ghc,green-haskell/ghc,ezyang/ghc,da-x/ghc,mcschroeder/ghc,christiaanb/ghc,olsner/ghc,snoyberg/ghc,shlevy/ghc,ryantm/ghc,holzensp/ghc,olsner/ghc,mfine/ghc,nushio3/ghc,ekmett/ghc,GaloisInc/halvm-ghc,TomMD/ghc,vikraman/ghc,AlexanderPankiv/ghc,hferreiro/replay,gridaphobe/ghc,mcschroeder/ghc,ezyang/ghc,ekmett/ghc,anton-dessiatov/ghc,urbanslug/ghc,nkaretnikov/ghc,spacekitteh/smcghc,ghc-android/ghc,vikraman/ghc,elieux/ghc,sgillespie/ghc,bitemyapp/ghc,gridaphobe/ghc,acowley/ghc,siddhanathan/ghc,shlevy/ghc,green-haskell/ghc,snoyberg/ghc,nathyong/microghc-ghc,GaloisInc/halvm-ghc,elieux/ghc,lukexi/ghc-7.8-arm64,urbanslug/ghc,AlexanderPankiv/ghc,ryantm/ghc,green-haskell/ghc,nomeata/ghc,ezyang/ghc,bitemyapp/ghc,da-x/ghc,gridaphobe/ghc,da-x/ghc,mfine/ghc,ml9951/ghc,sdiehl/ghc,christiaanb/ghc,mcmaniac/ghc,forked-upstream-packages-for-ghcjs/ghc,ezyang/ghc,mettekou/ghc,shlevy/ghc,anton-dessiatov/ghc,sgillespie/ghc,anton-dessiatov/ghc,ml9951/ghc,urbanslug/ghc,olsner/ghc,elieux/ghc,oldmanmike/ghc,da-x/ghc,fmthoma/ghc,siddhanathan/ghc,ml9951/ghc,lukexi/ghc,hferreiro/replay,mcmaniac/ghc,tjakway/ghcjvm,nathyong/microghc-ghc,ekmett/ghc,forked-upstream-packages-for-ghcjs/ghc,jstolarek/ghc,nathyong/microghc-ghc,mcschroeder/ghc,nathyong/microghc-ghc,nkaretnikov/ghc,urbanslug/ghc,ekmett/ghc,tibbe/ghc,urbanslug/ghc,tjakway/ghcjvm,frantisekfarka/ghc-dsi,holzensp/ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,acowley/ghc,nkaretnikov/ghc,nomeata/ghc,nushio3/ghc,nushio3/ghc,christiaanb/ghc,mettekou/ghc,oldmanmike/ghc,jstolarek/ghc,da-x/ghc,frantisekfarka/ghc-dsi,GaloisInc/halvm-ghc,ilyasergey/GHC-XAppFix,sdiehl/ghc,sgillespie/ghc,elieux/ghc,vTurbine/ghc,nushio3/ghc,ezyang/ghc,gridaphobe/ghc,lukexi/ghc,acowley/ghc,lukexi/ghc-7.8-arm64,hferreiro/replay,snoyberg/ghc,shlevy/ghc,vikraman/ghc,siddhanathan/ghc,fmthoma/ghc,nushio3/ghc,nkaretnikov/ghc,elieux/ghc,vikraman/ghc,mcmaniac/ghc,TomMD/ghc,nathyong/microghc-ghc,ml9951/ghc,sdiehl/ghc,wxwxwwxxx/ghc,tibbe/ghc,fmthoma/ghc,sdiehl/ghc,sdiehl/ghc,tjakway/ghcjvm,tjakway/ghcjvm,nkaretnikov/ghc,gridaphobe/ghc,mcschroeder/ghc,mfine/ghc,TomMD/ghc,tibbe/ghc,snoyberg/ghc,ml9951/ghc,tjakway/ghcjvm,nathyong/microghc-ghc,ghc-android/ghc,olsner/ghc,nomeata/ghc,ezyang/ghc,anton-dessiatov/ghc,mcschroeder/ghc,mettekou/ghc,gcampax/ghc,urbanslug/ghc,nomeata/ghc,nomeata/ghc,lukexi/ghc,hferreiro/replay,acowley/ghc,spacekitteh/smcghc,fmthoma/ghc,wxwxwwxxx/ghc,AlexanderPankiv/ghc,gcampax/ghc,AlexanderPankiv/ghc,wxwxwwxxx/ghc,sdiehl/ghc,gcampax/ghc,wxwxwwxxx/ghc,olsner/ghc,lukexi/ghc-7.8-arm64,ryantm/ghc,mfine/ghc,sgillespie/ghc,nushio3/ghc,mettekou/ghc,gcampax/ghc,mfine/ghc,mcschroeder/ghc,forked-upstream-packages-for-ghcjs/ghc,olsner/ghc,green-haskell/ghc,tibbe/ghc,ghc-android/ghc,tibbe/ghc,christiaanb/ghc,christiaanb/ghc,siddhanathan/ghc,ghc-android/ghc,oldmanmike/ghc,ghc-android/ghc,ilyasergey/GHC-XAppFix,holzensp/ghc,spacekitteh/smcghc,holzensp/ghc,acowley/ghc